Strong increase in the effective two-photon absorption cross-section of excitons in quantum dots due to the nonlinear interaction with localized plasmons in gold nanorods

Nanoscale ◽  
2021 ◽  
Author(s):  
Victor Krivenkov ◽  
Pavel Samokhvalov ◽  
Ana Sánchez-Iglesias ◽  
Marek Grzelczak ◽  
Igor Nabiev ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cross Section ◽  
Gold Nanorods ◽  
Photon Absorption ◽  
Strong Increase ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Nonlinear Energy Transfer ◽  
Localized Plasmons ◽  
Nonlinear Energy

The effective two-photon absorption in the hybrid material comprising quantum dots (QDs) in a poly(methyl methacrylate) (PMMA) matrix and gold nanorods (GNRs) was increased 12-fold due to nonlinear energy transfer from GNR plasmons to QD excitons.

scholarly journals Off-Resonant Two-Photon Absorption Cross-Section Enhancement of an Organic Chromophore on Gold Nanorods

2013 ◽  
Vol 4 (5) ◽  
pp. 749-752 ◽  
Author(s):  
Sean T. Sivapalan ◽  
Jarrett H. Vella ◽  
Timothy K. Yang ◽  
Matthew J. Dalton ◽  
Joy E. Haley ◽  
...  
Keyword(s):  
Cross Section ◽  
Gold Nanorods ◽  
Absorption Cross Section ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Organic Chromophore

The influence of illumination on two-photon absorption of quantum dots

2018 ◽  
Vol 27 (03) ◽  
pp. 1850031
Author(s):  
Zhiqiang Zhou ◽  
Jiawei Cong ◽  
Hongbing Yao ◽  
Yonghong Fu ◽  
Naifei Ren
Keyword(s):  
Quantum Dots ◽  
Ultraviolet Light ◽  
Cross Section ◽  
Optical Limiting ◽  
Experimental Results ◽  
Photon Absorption ◽  
Illumination Time ◽  
Two Photon Absorption ◽  
Two Photon

The influence of illumination with 365[Formula: see text]nm ultraviolet light on two-photon absorption (TPA) of aqueous Co[Formula: see text] doped CdTe (CdTe:Co) quantum dots (QDs) is studied. The results show that with the increase of illumination time, the TPA cross section of the CdTe:Co QDs increases. The experimental results suggest that this enhancement is due to the reduction of surface nonradiative traps which is consistent with the formation of CdS shell on the surface of CdTe:Co QDs. Meanwhile, the results indicate that aqueous CdTe:Co QDs have good optical limiting and optical stabilization performances. This provides a strategy of TPA enhancement by illumination.

The Empirical Correlation Between Size and Two-Photon Absorption Cross Section of CdSe and CdTe Quantum Dots

Small ◽  
2006 ◽  
Vol 2 (11) ◽  
pp. 1308-1313 ◽  
Author(s):  
Shih-Chieh Pu ◽  
Meng-Ju Yang ◽  
Cheng-Chih Hsu ◽  
Chih-Wei Lai ◽  
Cheng-Chih Hsieh ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cross Section ◽  
Absorption Cross Section ◽  
Empirical Correlation ◽  
Cdte Quantum Dots ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Two Photon Absorption ◽  
Two Photon

Size- and Wavelength-Dependent Two-Photon Absorption Cross-Section of CsPbBr3 Perovskite Quantum Dots

2017 ◽  
Vol 8 (10) ◽  
pp. 2316-2321 ◽  
Author(s):  
Junsheng Chen ◽  
Karel Žídek ◽  
Pavel Chábera ◽  
Dongzhou Liu ◽  
Pengfei Cheng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cross Section ◽  
Absorption Cross Section ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Perovskite Quantum Dots

Plasmonic Enhancement of the Two Photon Absorption Cross Section of an Organic Chromophore Using Polyelectrolyte-Coated Gold Nanorods

Langmuir ◽  
2012 ◽  
Vol 28 (24) ◽  
pp. 9147-9154 ◽  
Author(s):  
Sean T. Sivapalan ◽  
Jarrett H. Vella ◽  
Timothy K. Yang ◽  
Matthew J. Dalton ◽  
Rachel N. Swiger ◽  
...  
Keyword(s):  
Cross Section ◽  
Gold Nanorods ◽  
Absorption Cross Section ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Plasmonic Enhancement ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Organic Chromophore

Bisporphyrin connected by tetrathiafulvalene

2009 ◽  
Vol 13 (01) ◽  
pp. 114-121 ◽  
Author(s):  
Kazuya Ogawa ◽  
Yasunori Nagatsuka
Keyword(s):  
Cross Section ◽  
Density Functional ◽  
Polar Solvent ◽  
Soret Band ◽  
Oxidation Potential ◽  
Time Dependent ◽  
Photon Absorption ◽  
Functional Theory ◽  
Two Photon Absorption ◽  
Two Photon

A new porphyrintetrathiafulvalene composite, where two porphyrins are bridged by te trathiafulvalene (TTF) using acetylene bonds was synthesized. The Q-band of the monomeric porphyrin appears at 590 nm whereas that of the composite is red-shifted to 620 nm and intensified. The Soret band is also red-shifted from 427 nm to 435 nm and much broadened, indicating the expansion of π-conjugation over the porphyrin and tetrathiafulvalene units. The HOMOs and LUMOs were calculated using time-dependent density functional theory. Voltammetric experiments revealed that the first oxidation potential of the TTF moiety in the composite was shifted by +155 mV compa red with TTF in the absence of composite. The effective two-photon absorption (2PA) cross section values were measured by using a nanosecond open aperture Z-scan method. The maximum effective 2PA cross section values were obtained at 760 nm, as 7300 GM in benzonitrile and 5900 GM in toluene. The values obtained in the polar solvent were 1.2 to 1.5 times larger than those in the nonpolar solvent.

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